The S&P 500’s 2020 bear market took 33 calendar days from its February 19 peak to its March 23 trough. The rapid decline was driven by escalating fears about the economic effects of the COVID-19 pandemic.
The index entered bear-market territory after falling at least 20 percent from its record close. Within weeks, travel restrictions, business closures, supply disruptions, and emergency policy measures were reshaping expectations for corporate earnings and economic activity.
The 2020 crash was unusually fast compared with many earlier bear markets. Central banks cut interest rates, governments introduced large fiscal programs, and financial markets began recovering soon after the March low. The S&P 500 eventually regained its pre-crash closing high in August 2020.
The 33-day figure refers to calendar days between the closing high and closing low, not the number of trading sessions. It is also distinct from the pandemic’s broader economic effects, which continued long after the index had rebounded.